<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<script type="text/javascript" src="js/jquery-3.3.1.js"></script>
		<script type="text/javascript" src="js/bootstrap.js"></script>
		<link rel="stylesheet" href="css/bootstrap.css" />
	</head>
	<body>
		<img src="img/a.png" class="img-rounded img-responsive">
		<img src="img/a.png" class="img-circle ">
		<img src="img/a.png" class="img-thumbnail ">
	</body>
</html>
